Nikon D4 - Manual (Page 7)

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Illustrations
Save where otherwise noted, all software and operating system dialogs,
messages, and displays are taken from Windows 7 or Mac OS X. Their
actual appearance and content may vary with the operating system used.
For information on basic computer operations, see the documentation
provided with the computer or operating system.
A
WT-4 Wireless Transmitters
For information on using the optional WT-4 wireless transmitter, see the
documentation provided with the WT-4. The options described in the
WT-4 manual as being in the device info and device settings menus can
be accessed from Network > Device info and settings in the D4 setup
menu.